Slate dressing or planing machine



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;T.J.RUOH." SLATE DRESSING-OR PLANING MACHINE. I No. 508,579. Patented Nov. 14,1893.

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T. J. HUGH.

SLATE DRESSING 0R PLANING MACHINE.

N0. 508,579. Patented .NOV. 14, 1893.

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ME NA'nonAL unmsammma COMPANY I U ITED STA?t ns' PATENT OFFICE.

THEODORE J. RUOH, OF BANGOR, PENNSYLVANIA.

SLATE DRESS|NG.OR PLANlNG MACHINE.

SPECIFICATION forming part of Letters Patent No. 508,579, dated November 14, 1893.

Application filed June 12,1893. Serial No. 477,349- (No model.)

To albwhom it may concern:

Be it known that I. THEODORE J. RUOH,,'a citizen of the United States, residing in the borough of Bangor, in the county of Northampton, State of Pennsylvania, have invented certain new and useful Improvements in Sla e Dressing or Planing Machines, of which the following is a specification, reference being had therein to the accompanyingdrawings.

This invention relates to certain new and useful improvements 'in slate dressing or: planing machines, of that classinwhich two sets of knives are employed, and it has for its objects among others to provide an improved machine of this character in which .theknives are stationary relative'to the slate which is moved to the knives by means of a:

cross-head or carrier, suitable means being provided for holding the advancing end of the slate down uponthe bed and thus pre- Venting'its turning up or warping. Provisthe attendant except tojfeed the slate theretion.

Other objects and advantages of the invention will hereinafter appear and the novel features thereof will be specifically. defined by the appended claims.

The invention is clearly illustrated in the accompanying drawings, which, with the letters of reference marked thereon, form apart of this specification, and in which- Figure 1 is a plan view of my improved machine. Fig. 2 is a vertical longitudinal section through the same on the line 2-2 of Fig. 1. Fig. 3 is an end view. Fig. 3 is a detail of a portion of the carrier with one of the blocks removed.

Like letters of reference indicate like parts throughoutthe several views.

Referring now to the details of the drawings by letter, A designates the frame-work of the machine which is designed to support the operating parts. Suitable cross-rods A serve to brace it.

to, and is durable and eflicijent in its operaof the adjusting screws or bolts 1) as shown best in Fig. 2. Near each end of the table or bed I mount a pressure roller 0 adapted to bear upon the upper face of the advancing end of the slate as it is moved along the upper face of the table or bed and thus keep the slate down fiat upon the table and prevent its Warping or throwing up, thus insuring better results. These pressure rollers may be mounted in any suitable manner,and when the machine is set ready for operation the bed is so adjusted vertically that the slate will just bear against the roller not sufficiently to create any material pressure but just enough to keep the slate down flat upon the table.

D is the cross-head or carrier mounted to reciprocate over the table or bed and having its opposite faces provided with longitudinal grooves in Which-fare fitted the blocks D of wood, rubber orariy other suitable material which will prevent chipping or injury to the slate; they are each formed with an undercut shoulder (1 under which the edge or end of the slate is designed to be received. This I cross-head or carrier is actuated in the following manner:E is the main power shaft provided with the band pulleys E and designed to receive motion from any suitable source, not shown. On the other end of this shaft is a small gear wheel or pinion F which in turn meshes with the large gear wheel or pinion F on the shaft F suitably journaled parallel with the shaft E as shown. On the other end of the shaft F is a wheel F which may be a fly wheel as seen in Fig. 3 ora pinion as shown in Fig. 1, or a gear wheel or pinion as seen in Fig. 1 may be arranged to mesh with asmall gear on the shaft E similar to that shown in Figs. 2 and 3. The wheels F and F are connected with the cross-head or carrier by means of the connecting rods G and G which are suitably connected at one end with the crosshead or carrier and at the other to the wrist or crank pins 9 on the said wheels as seen best in Figs. 1 and 2.

The knives are arranged at opposite ends of the table or bed as seen best in Fig. 2; they are mounted in the frames or holdersH in each of which is a knife H, the knives in each frame or holder being adjustable independent of the other by adjusting screws h, the knives being arranged in inclined positions as seen in Fig. 2 with a space between their adjacent cutting edges as seen in Fig. 2 for the passage of the slate. Each knife is adjustable independent of the other and each frame is mounted to be adjusted vertically either up or down to adapt the knives to thicker or thinner slate by means of the screws h as seen best in Fig. 2 which are suitably mounted in the ends of the frame,the frames or knife-holders being mounted to slide in suitable guides or ways on the mainframe A. The holders or knife-frames are divided in line with the upper face of the table or bed as seen at h to permit the passage of the slate.

The knives are adjusted in their inclined planes to regulate the amount of slate to be as to clear the slate as it is moved along the With the parts constructed and arranged substantially as above set forth the operation is as follows:-The bed or table having been adjusted to the proper height according to. the thickness of the slate to be planed, and

the knives accordingly adjusted both verti- ,cally and angularly, the machine is set in motion and. as the cross-head or carrier reciprocates back and forth a piece of slate is by which it is planed. As the cross-head is about to make its return stroke a piece of slate is placed on the bed upon the opposite side of the cross-head which takes the slate along and forces it between the other knives, between which it passes out of the machine.

It is deemed important that the knives remain stationary and that the cross-head reciprocate as by this means better work is performed and there is no danger of the attendant being injured by the knives as is the case where the knives reciprocate. Furthermore, by the construction shown accurate adj ustment of all of the parts is easily attained.

Modifications in detail may be resorted to without departing from the spirit ofthe invention or sacrificing any of its advantages. The pressure rollers may sometimes be dispensed with.

What I claim as new is 1. The combination with the table or bed, of the reciprocating cross-head having removable slate-engaging portions upon opposite sides thereof, asset forth.

2. The combination with the table or bed, of the reciprocating cross-head having removable slate-engaging portionsseated in recessesin the cross-head and having undercut 3. The combination with the table or bed,

of the reciprocating cross-head having removable slate-en gaging portions held in transverse recesses' of the cross-head and provided with undercut shoulders, upon opposite sides of the cross-head and beneath which the slate is designed to behe'ld,as and for the purpose specified. j

4. The combination with the'vertically-adjustable slatted table or bed, of the oppositely inclined knives at opposite ends thereof, means for adjusting said knives vertically and angularly with relation to the table or bed, vertically adjustable holders for said knives, and a cross-head mounted to reciprocate between the knives and force the slate therebetween, substantially as specified.

In testimony whereof I affix my signature in presence of two witnesses.

THEODORE J. RUCI-I. Witnesses:

GERSHOM G. BLAKE, N. W. REICHARD. 

